Home / 40,779.47-61,158.11-11,190.30

Finding the Fourth Proportional to 40,779.47, 61,158.11 and 11,190.30

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Solution

The fourth proportional to 40,779.47, 61,158.11 and 11,190.30 is: 16,782.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,779.47 : 61,158.11 = 11,190.30 : x
  2. Step 2: Convert to fraction form
    40,779.47/61,158.11 = 11,190.30/x
  3. Step 3: Cross multiply
    40,779.47x = 61,158.11 × 11,190.30
  4. Step 4: Simplify right side
    40,779.47x = 684,377,542.38
  5. Step 5: Solve for x
    x = 684,377,542.38/40,779.47
  6. Step 6: Final answer
    x = 16,782.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.